PPR Parallel Pressure Reactor

PPR – Parallel Pressure Reactor

Customized parallel pressure reactor system

Reactor volume:	50 to 300 ml
Number of reactors	2-6
Pressure:	-1 (FV) to + 150 bar
Temperature:	- 20 °C to +300 °C
Material:	stainless steel, Hastelloy®

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Typical applications

Carbonylation by CO
Carboxylation by CO₂
Catalyst testing in parallel
Decarboxylation
Design of experiment (DoE)
Ethoxylations
Friedel-Crafts-Acylation
General gas reactions at constant flow (CO, CO₂, Ethylene, O₂, NO)
Hydrogenations in parallel
Process development, scale up studies
Quality by Design (QbD)

About Parallel Pressure Reactor (PPR)

Catalyst screening and Hydrogenations in reduced time, reproducible and safe: These were the key issues for our customer in chemical research, asking us to develop this system.

This parallel pressure reactor system is configurable and modular, allowing for individual or parallel operation settings of each reactor. This system uses automated process control enabling fast process development and parallel reaction screening in a reproducible and safe manner.

Multiple safety features guarantee safe hydrogenations and other processes.

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2 - 6 Reactors PPR systems are available
Individual or parallel operation settings for each reactor (temperature, other)
Configurable hardware: from Basic to complete setup including dosing
Automated sampling

Manual: The software controls the reactor hardware, data logging of process data
Automated: Low to high degree (full process automation including dosing of gas, liquids)
For full automation, a recipe editor is included in the software to edit existing settings and to define completely new processes.
Multiple safety features guarantee safe hydrogenations and other processes

PPR with 3 pressure reactors in parallel, 1 with automated sampling

2 - 6 pressurized reaction vessels in its individual heating / cooling blocks can be controlled in the PPR system. The system is expandable, starting at 2 reactors.

Reactor block with individual heating / cooling
Lift for Reactor block lifting / lowering
Individual temperature control
Reactor with safety fast action closure
Stirrer drive with powerful magnetic coupling (75 Ncm torque)
Continuous adjustable agitator speed, 0-2500 rpm
Safety rupture disc
Pt100 sensor
Cover with 6 opening (for Pt100, dip tube, valves etc.)
Optional burette, catalyst basket, gassing stirrer etc.
Optional liquid dosing via balance (at up to 275 bar)
Optional liquid dosing, SS316 pr PEEK corrosion resistant metering pump, flow rates 0.003 to 40 ml/min

The PPR software is user-friendly. Every single process step can be followed on the graphic display. It is GxP compliant, data can be exported. Multiple safety features guarantee safe process procedures. Operation mode can be chosen from manually to fully automated, depending on installed hardware.

Control parameters are: Reaction pressure, temperature, gas, liquid flow, gas consumption, stirrer speed, safety limits etc.

Available single automation steps:

Inert gas purging
Leakage control
Gas purging (nitrogen / active gas)
Reaction control mode constant-flow
Reaction control mode constant reaction pressure
Etc.

End criteria to stop a hydrogenation:

Total gas consumption
Minimal gas flow
Time over event controlled

Examples

Individual chart for each reactor, showing actual gas - flow (nL/min), Gas consumption, process temperature, pressure, rpm, feed,..

Setting up recipes: drag & drop editor, recipe modification "on the fly", functions as if..then...else logic, loop, jump back to phase..

PPR2

2 - 6 pressurized reaction vessels in its individual heating / cooling blocks can be controlled in the PPR system. The system is expandable, starting at 2 reactors.

Reactor block with individual heating / cooling
Lift for Reactor block lifting / lowering
Individual temperature control
Reactor with safety fast action closure
Stirrer drive with powerful magnetic coupling (75 Ncm torque)
Continuous adjustable agitator speed, 0-2500 rpm
Safety rupture disc
Pt100 sensor
Cover with 6 opening (for Pt100, dip tube, valves etc.)
Optional burette, catalyst basket, gassing stirrer etc.
Optional liquid dosing via balance (at up to 275 bar)
Optional liquid dosing, SS316 pr PEEK corrosion resistant metering pump, flow rates 0.003 to 40 ml/min

Automated sampling:

Contamination free
Up to 4 samples of each reactor
Automated (recipe) or manually controlled
Sampling shown live in graphic display

PPR (Parallel Pressure Reactor) at ETH Zurich

Success in reaction engineering in the field of plastics recycling

Mixing performance and catalyst effectiveness optimized with help of CFD simulations done at Buchi

Researchers of the ETH Zurich in collaboration with Buchi demonstrated that optimal stirring parameters play a key role in chemical plastics recycling. They introduced a criterion to enhance mixing performance and catalyst effectiveness to treat polyethylene and polypropylene.

All experiments have been done in Buchi’s technologically leading PPR (Parallel Pressure Reactor) system.

Read here the complete case study.